This circuit is from a 1990s publication by William Sheets. The circuit consists of a stage whose gain is adjusted according to the signal intensity.
This circuit is designed to measure very weak currents, in the nanoampères range, using the 1 V...
This circuit consists of a decoder for remote control that allows the activation of 10 channels based...
This circuit is from a 60's documentation. The capacitance C1 can be between 20 pF and 0.01 uF...